Also buying, Microsoft Corp says it has already completed acquisition of Netwise Inc, Boulder, Colorado developer of middleware for integrating mainframe and client-server environments. Terms of the deal were not disclosed. Microsoft wants the company’s technology to help customers that want to deploy Windows NT in BackOffice servers while maintaining interoperability with their mainframe databases. It says it plans to integrate Netwise TransAccess with its SQL Server database management system, Visual Tools and Object Linking & Embedding lines.